Event: London Banks Team Swiss 2008-09

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Opponent	Rating	Result
Geoff R Hermes	0	0 - 1
Adrian M Davies	0	0 - 1
Martin D Leanse	0	½ - ½
Gerald F Parfett	0	0 - 1
Maria L Sant	0	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-160 = (0 + 400 * (1 - 3)) / 5)